Libyan leader Moammar Gadhafi, center, with Egyptian President Hosni Mubarak, right, and his Yemeni counterpart Ali Abdullah Saleh, left, pose during a 2010 group picture with Arab and African leaders during the second Afro-Arab summit in Sirte, Libya. As rebels swarmed into Tripoli, Libya, and Gadhafi's son and one-time heir apparent Seif al-Islam was arrested, Gadhafi's rule was all but over, Western officials say.